Goodwill (Tables)

6 Months Ended

Jun. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The following is a rollforward of our goodwill ($ in millions):

Balance, December 31, 2016	$	3,979.0
Foreign currency translation & other	53.1
Balance, June 30, 2017	$	4,032.1

The carrying value of goodwill by segment is summarized as follows ($ in millions):

	June 30, 2017		December 31, 2016
Professional Instrumentation	$	2,457.8	$	2,423.7
Industrial Technologies	1,574.3		1,555.3
Total goodwill	$	4,032.1	$	3,979.0